Trait actix::fut::ActorStream

[+] Show declaration

pub trait ActorStream {
    type Item;
    type Error;
    type Actor: Actor;
    fn poll(
        &mut self, 
        srv: &mut Self::Actor, 
        ctx: &mut <Self::Actor as Actor>::Context
    ) -> Poll<Option<Self::Item>, Self::Error>;

    fn map<U, F>(self, f: F) -> StreamMap<Self, F>
    where
        F: FnMut(Self::Item, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> U,
        Self: Sized,
    { ... }
    fn map_err<E, F>(self, f: F) -> StreamMapErr<Self, F>
    where
        F: FnMut(Self::Error, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> E,
        Self: Sized,
    { ... }
    fn then<F, U>(self, f: F) -> StreamThen<Self, F, U>
    where
        F: FnMut(Result<Self::Item, Self::Error>, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> U,
        U: IntoActorFuture<Actor = Self::Actor>,
        Self: Sized,
    { ... }
    fn and_then<F, U>(self, f: F) -> StreamAndThen<Self, F, U>
    where
        F: FnMut(Self::Item, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> U,
        U: IntoActorFuture<Error = Self::Error, Actor = Self::Actor>,
        Self: Sized,
    { ... }
    fn fold<F, T, Fut>(self, init: T, f: F) -> StreamFold<Self, F, Fut, T>
    where
        F: FnMut(T, Self::Item, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> Fut,
        Fut: IntoActorFuture<Actor = Self::Actor, Item = T>,
        Self::Error: From<Fut::Error>,
        Self: Sized,
    { ... }
    fn timeout(self, timeout: Duration, err: Self::Error) -> StreamTimeout<Self>
    where
        Self: Sized,
        Self::Error: Clone,
    { ... }
    fn finish(self) -> StreamFinish<Self>
    where
        Self: Sized,
    { ... }
}

[−] Expand description

A stream of values, not all of which may have been produced yet.

This is similar to futures::Stream trait, except it works with Actor

Associated Types

type Item[−]

The type of item this stream will yield on success.

type Error[−]

The type of error this stream may generate.

type Actor: Actor[−]

The actor within which this stream runs.

Required Methods

fn poll(
    &mut self,
    srv: &mut Self::Actor,
    ctx: &mut <Self::Actor as Actor>::Context
) -> Poll<Option<Self::Item>, Self::Error>

Provided Methods

fn map<U, F>(self, f: F) -> StreamMap<Self, F> where
    F: FnMut(Self::Item, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> U,
    Self: Sized, [−]

Converts a stream of type T to a stream of type U.

fn map_err<E, F>(self, f: F) -> StreamMapErr<Self, F> where
    F: FnMut(Self::Error, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> E,
    Self: Sized, [−]

Converts a stream of error type T to a stream of error type E.

fn then<F, U>(self, f: F) -> StreamThen<Self, F, U> where
    F: FnMut(Result<Self::Item, Self::Error>, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> U,
    U: IntoActorFuture<Actor = Self::Actor>,
    Self: Sized, [−]

Chain on a computation for when a value is ready, passing the resulting item to the provided closure f.

fn and_then<F, U>(self, f: F) -> StreamAndThen<Self, F, U> where
    F: FnMut(Self::Item, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> U,
    U: IntoActorFuture<Error = Self::Error, Actor = Self::Actor>,
    Self: Sized, [−]

Chain on a computation for when a value is ready, passing the successful results to the provided closure f.

fn fold<F, T, Fut>(self, init: T, f: F) -> StreamFold<Self, F, Fut, T> where
    F: FnMut(T, Self::Item, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> Fut,
    Fut: IntoActorFuture<Actor = Self::Actor, Item = T>,
    Self::Error: From<Fut::Error>,
    Self: Sized, [−]

Execute an accumulating computation over a stream, collecting all the values into one final result.

fn timeout(self, timeout: Duration, err: Self::Error) -> StreamTimeout<Self> where
    Self: Sized,
    Self::Error: Clone, [−]

Add timeout to stream.

err value get returned as a timeout error.

fn finish(self) -> StreamFinish<Self> where
    Self: Sized, [−]

Converts a stream to a future that resolves when stream finishes.

Implementors

• impl<S, F, U> ActorStream for StreamAndThen<S, F, U> where     S: ActorStream,     F: FnMut(S::Item, &mut S::Actor, &mut <S::Actor as Actor>::Context) -> U,     U: IntoActorFuture<Actor = S::Actor, Error = S::Error>,  type Item = U::Item; type Error = S::Error; type Actor = S::Actor;

• impl<S, F, U> ActorStream for StreamMap<S, F> where     S: ActorStream,     F: FnMut(S::Item, &mut S::Actor, &mut <S::Actor as Actor>::Context) -> U,  type Item = U; type Error = S::Error; type Actor = S::Actor;

• impl<S, F, U> ActorStream for StreamMapErr<S, F> where     S: ActorStream,     F: FnMut(S::Error, &mut S::Actor, &mut <S::Actor as Actor>::Context) -> U,  type Item = S::Item; type Error = U; type Actor = S::Actor;

• impl<S, F, U> ActorStream for StreamThen<S, F, U> where     S: ActorStream,     F: FnMut(Result<S::Item, S::Error>, &mut S::Actor, &mut <S::Actor as Actor>::Context) -> U,     U: IntoActorFuture<Actor = S::Actor>,  type Item = U::Item; type Error = U::Error; type Actor = S::Actor;

• impl<S> ActorStream for StreamTimeout<S> where     S: ActorStream,     S::Error: Clone,  type Item = S::Item; type Error = S::Error; type Actor = S::Actor;

• impl<S, A> ActorStream for StreamWrap<S, A> where     S: Stream,     A: Actor,  type Item = S::Item; type Error = S::Error; type Actor = A;